I have a simple class called tire. Now I want to dynamically allocate the number of tires for a vehicle when a vehicle object is created. For this, I want to create an array of tire-class objects with size equal to the number of tires. To check my code, I would like to print the number of objects in the tire-class array.
The question is: Is there a function which can check how many elements are in my tire class array? Can I use the sizeof() function?
Here is the code:
#include <iostream>
// create a class for the tires:
class TireClass {
public:
float * profileDepths;
};
// create class for the vehicle
class vehicle {
public:
int numberOfTires;
TireClass * tires;
int allocateTires();
};
// method to allocate array of tire-objects
int vehicle::allocateTires() {
tires = new TireClass[numberOfTires];
return 0;
};
// main function
int main() {
vehicle audi;
audi.numberOfTires = 4;
audi.allocateTires();
// check if the correct number of tires has been allocated
printf("The car has %d tires.", sizeof(audi.tires));
// free space
delete [] audi.tires;
return 0;
};